What consumers, general practitioners and mental health professionals want: the co-design and prototype testing of a transdiagnostic, acceptance and commitment therapy-based online intervention to reduce distress and promote wellbeing among Australian adults

Background: Many Australians experience mental health challenges, but only a third access face-to-face psychological services, due to multiple barriers including long waitlists. Additional strategies to prevent or help people de-escalate distress at an early stage are needed. Web-based mental health interventions are becoming increasingly acceptable to consumers and referring General Practitioners (GPs), but most are designed for specific disorders/populations. This study explores consumers' and health professionals' preferences and recommendations for the design of a transdiagnostic, Acceptance and Commitment Therapy (ACT)-based, online intervention for Australian adults. Methods: Thirty-five people (consumers, carers, GPs, mental health professionals) participated in one or more co-design stages. Stage 1: semi-structured interviews to establish what is wanted from such websites (n = 22). Stage 2: feedback emailed on branding options (n = 20). Stage 3: feedback provided via Zoom or an online survey after testing a website prototype (n = 19). Data were analysed using Thematic Framework Analysis and descriptive statistics. Results: Stage 1 highlighted nine key design principles (plus 25 subthemes) that participants emphasised as important to ensure the website would have broad appeal and meet their needs: (1) user choice is valued highly; (2) ACT-based content is acceptable as it is focused on helping people be proactive and 'get unstuck'; (3) non-pathologising, direct, empowering, lay language is endorsed; (4) a positive look and feel is appreciated; (5) images and videos are important to break up text and maintain engagement; (6) short text messages to aid engagement are valued; (7) provision of tailored psychoeducation for highly distressed and suicidal users is endorsed; (8) personal and proactive brand name is preferred (icanactnow); (9) diverse marketing and training activities are recommended. In Stage 2, icanactnow branding preferences were elicited (simplicity, colours to represent growth and a call to action). Stage 3 resulted in the inclusion of a safety plan template and a tailored entry portal for people referred to icanactnow by health professionals. High levels of satisfaction with the prototype were reported. Conclusions: These findings informed icanactnow and provide insights for the development of other online mental health interventions, in ways that appeal to both consumers and professionals recommending them. [ABSTRACT FROM AUTHOR]